Internal-combustion engine



` F. H. LEINWEBER.

INTERNAL' COMBUSTION' ENGINE.

3 SHEETS-M1551l I FILED 06T. 23| 1916.

Mar. 6, 1923.

' F. H. LEINWEBER.'

INTERNAL COMBUSTION ENGINE'.

msn ocr. 2s. |916. 3 sains-suur 2.

@744) #Miura 6% Mar. 6, 1923.

FILED' ocT. 23. 1916.

F.. W G .N mnrLr-F.. BN Em WS NU IIB E M L0. -C H ll- Rw.. H .E T m 3 SHEETS-SHEET 3.

HH 4 j,

www

innen PATIENT orari-ca.

. FREDERICK H. LEINWEBEB,.OF CHCAG'O, ILLINGES; CURTS H. LENWEB'R, VIELLAN n. nnmwnnnn, AND' vieron, n. `:cnrnwnenn nrncnrone LENVJEBER, DECEASED."

F SAEZ!) FREDERICK H.

rNrrnnNaL-comnnsrron ENGINE.

.Application filed October 23,1916. `Serial No. 127,291.

To all whom imag concern.

Be it known that '.LFREDERICK H. LEIN- wnBnR, a citizen of the United States, and

a resident of thefcity of Chicago, county ci'` Cook, and State of Illinois, have invented certain 'newfandfuseiul .Improvements in Internal-Combustion Engines, of which Vthe following isa specification.

internal combustionengines, and has for its object, the provision of an improved construction of this'gcharacter capable of op erating with greateiiiciency.

The invention consists in the combina- Fig. 4, a section taken on line 4-4 of Fig. 1,

Fig. 5, a detail section illustrating a' slightly modified form of construction for" operating the exhaust valve,

' Fig'. 6, a section taken on line 6- 6 of F'ff. l V

` Fig.7 7, a section takenon line, `7 7 of Fig. l, y y

` Fig. 8, a section taken` online 8-8 of Fie l, 1

Fig. 9, a section taken on line 9`9fof Fig. 10, a section taken on line 10--10 of Fig--1, 'Fig il,

Fig. l,

Fig. l2, a section taken on line 12-#12 of Fig.1,'

a section taken on linejil-1l of rig. .13, a Section teken on une 13 1301 Figl, Fig. 14, an enlarged section of a check valve employed inthe engine,

hureter connection employed'in the engine.

` The form ot"'ciinstruction,v` illustrated in-` gS Y l' toj 113 lincln'sive,j` comprisesV a t lower tions and arrangements of parts hereinafter cylinder 3()` mounted upon a suitable closed lcrank case 3l having a crankshaft 32 opeiatingV therein and connected by means of a` connecting rod 33 with a piston 34 4operating in cylinder, 30. Another cylinder 35 is arranged coi-axially with cylinder 3() to cooperate therewith, and a. cylinder-pis- Y l y 1J00u36 is arranged to reciprocate within the Myinventionarlelates to improvements 1n `cylinder35-` The cyiindenpiston 36 is rigidly connected by means of rods 37 passing through suitable stuffing boiresin'the inner end ci: cylinder`35 with piston 34 to move in unison therewith, both the cylinder 35 and the cylinder-piston 36 being closed at both ends,as shown. A stationary piston 38 is arranged within the cylinder-piston 36,"up'on a hollow stem or pedestal 39, as

shown. The outer end or headv of cylinder 35 is provided ywith a central opening 4() for the usual spari: plug, and exhaust ports 4l arearranged inthe walls of lcylinder 35, ad-

ed 'therewith byfm'ea'nsjoi radial ports 48,

` as shown. `By-passes" 50 are arranged in the exterior wall oi' `cylinder-piston 36 Ato co- "operate with ley-passes 49 formed` in theinterior `wall `of cylinder 35, so as to place ports 48? in communication with the interor'oi cylinder 35 as soon as the bjifpasses 49 'are uncovered by. cylinder-piston 36 in its downward stroke. Radial exhaust ports .5l

are 'also provided iin the wallsof cylinder 35 in position to be thrown into communication with'thecorresponding ports 43 by means of the by-pass 50, thus effecting eX- H t ha'ust of cylinder 47. By this arrangement Fig. 515, a detailview"illustrating a can soon 'as ley-passes 49 are uncovered, the `pis` va-lve42 is providedwith an annular pisI lton 46 operating 1nV an annular cylinder 47 #surrounding the cylinder 35 and connectton 46 will be operated to raise sleeve valve 42 and exhaust the cylinder 35, and that as soon as lay-passes 50 uncover ports 51, cylinder 47 will be exhausted to permit down- Ward' movement of sleeve valve 42 and close the ports 41.

In Fig. 5, I have illustrated a. slightly modified form of construction which dispenses with the exhaust ports 51, suitable eX- haust `ports 5.1 being provided in the walls of cylinder 47 for the samepurpose.

Ports 52 are formed in the walls of cylinder 35 communicating with air compression chambers 53 connected with cylinder 3() by means of passages containing check valves 54, shown in detail in Fig. 14, said check valves being fully illustrated and de- `scribed in my copending application, tiled October 13, 1916, Serial No. 125,491, and

need no further description here, it being Vsufficient to state that the action of piston 34 operating in cylinder 30 is to maintain a supply of compressed air inthechambers 53.l as will be readily understood.

Ports 55 are formed in the walls of cylinder-piston 36 and communicate with bypasses 56 formed in the outer walls thereof.

Cooperating combined ports and by-passes .57 are formed in the Walls of cylinder 35 and comunicate with an air chamber 57 :is shown. An air pipe 58 leads from chambers 57 to a valve casing 59, as best shown in Figs. 4V and 15. Valve casing 59 is equipped with an oscillatory valve 60 operableby means ofan arm 61r and connecting rod 62, as shown, and the valve casing 59v is connected by means of a pipe 63 with the lower end of an ordinaryvcarbureter64 connected at its upper en d with a pipe 65, a branch pipe 66 leading from valve casing 59, to the pipe 65, as shown. Pipe 65 leads i, to chamber 67 communicating through ports 68 with the interior of cylinder 35 and a by-pass 69 is formed in the lowerinner walls of cylinder-piston36. By this arrangement, when the ports come in registration with ports 57 and ports 68' are vuncovered by cylinder-piston 36, a forced blast of air passes through carbureter 64 and carries an explosivecharge" from said carbureter into the cylinder 35, the carburetor 4, 64 being arranged to supply gasoline to the engine. By shiftingvalve this supply of gasoline may be readily cut olf and pure air supplied when desired. A port 70 is formed' l in the lower Wall of lcylinder 35 communi- `eating with a passage 71 to which a carbureter pipe 58 is-connected, the other lcarbureter pipe being connected with another passage 71, leading to a port 72 located in theinner Wallof cylinder 35, the arrange- L mentbeing such. that when port 72 is uncov- 1 ered a blast of air is forced through a carbureter attached to pipesm58 and 65v to inject a supply of fuel therefrom into the cylinder Vis .thus supplied to the cylinder 35. T he cylinder 35 is provided with an air port 35 and the crank case 31` isprovided with anv air port 30 `for admitting air to the lower portions of cylinder 35 and to cylinder 30 and crank case 31- at the proper times, to supply the fresh air for the air blast, as set forth.

By this arrangement, it will be observed, that three vdifferent kinds of lfuel will be supplied to the v-enginecylinder 35A successively, and in suchgrelation. thatthe gasoline, or most easily applied'fuel, will be d1- rectly associated with Athe spark plug so as to facilitate combustion of the vother or less easily ignited fuels, thusrpermitting of operation of the engine very economically and with great efficiency. y

.A suitable cooling system issupplied for cylinder 35 and piston 38, through one or more openings 76 provided, asf shown.

AWhile I have illustrated `and ldescribed the preferred forms of construction lfor carrying my invention into etfect,this is capable of variation and-modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction setforth, but desire'to avail myself of such variations and modifications as come within the scope of the appended claims.

Having described my invention what l claim'as new and desire to `secure by Letters Patentis: A f,

1. Arr internal` combustion `engine comprising an outer cylinder; a cylinder-piston Within said outerAk cylinder; a piston within said cylinder piston; and means cooperating With said -cylinder piston and said piston for supplylng diiferent kinds of fuel to one vendol" said outer eyliodensubstantially as described. l .Y

2. An internal combustion engine comprising an outer stationary cylindergra reciprocating'cylinder-piston within said outer cylinder; a stationary piston within said cylinder-piston; and means cooperating with said cylinder-piston and saidpiston for supplying different kinds of `fuel to one end of said outer cylinder, substantially as described. i

3.y An internal combustion engine "com- `prising nan outer cylinder closed at both ends; a cylinder-pistonV within said outer cylinder and closed 4at both ends; a piston within said cylinder-piston; and means' cooperating With said cylinder-piston and Vsaid.

lpiston for supplying diiferent kinds fuel to kone, end of saidouter'cylinder, substantially as' described.

4a `internal .,coinloustioiiiV ,engine comprising an outer statjlonary'cylinder closed at both ends; a reciprocating cylinder-piston 'said cylinder-piston and said piston; for supplying different kindsof fuel to one end of said outer cylinder, substantially as described.

5. An internal combustion engine comprising an outer cylinder; a cylinder-piston Within said outer cylinder; a piston Within said cylinder piston; means cooperating With said cylinder piston and said piston for supplying diiferent kinds of fuelto one end of said outer cylinder; an air cylinder coaxial With said outer cylinder; a piston in said ai'r cylinder; and means for utilizing said air cylinder and piston for charging said one -end of said outer cylinder, substantially as described.

6. An internal combustion engine comprising an outer stationary cylinder; a reciprocating cylinder-piston within said outer cylinder; a stationary piston Within said cylinder-piston; means cooperating` With said cylinder-piston and said piston for supplying different kinds of fuel to one end of said outer cylinder; an air cylinder co-axial with said outer cylinder; a piston in said air cylinder; and means lfor utilizing said air cylinder and piston for charging said one end of said outer cylinder, substantially as described.

7'. An internal combustion engine comprising an outer cylinderclosed at both ends; a cylinder-piston Within said outer cylinder and closed at both ends; a piston Within said cylinder-piston; means cooperating with said cylinder-piston and said piston for supplying diii'erent kindsof fuel to one end of said outercylinder; an air cylinder co-axial with said outer cylinder; a piston in said air cylinder; and means'for utilizing said air cylinder and piston for charging said one end of said outer cylinder, substantially as described.

8. An internal combustion engine comprising an outer stationary cylinder closed at both ends; a reciprocating cylinder-piston Within said outer cylinder and closed at both ends; av stationary piston Within said cylinder-piston; means cooperating with said cylinder-piston and said pistonA for supplying diii'erent kinds of fuelto one end of said outer-cylinder; an air cylinder co-axial with said outer cylinder; a piston in said air cylinder; and means for' utilizing. said air cylinder and piston for charging said one end of'said outer cylinder, substantially as described.

49.,.An internal combustion engine com- Fprising' an outer stationary cylinder closed at viloth ends, the outer side Walls of said i cylinder being provided with exhaust ports;

a 'h`olloW cylinder-piston reciprocating in said `outer cylinder .andclosed at -both ends;

astationarypiston operating in said cylinder-piston and' `co-operating therewith *do vsupply fuel charges to said outer cylinder;

.al Dreciprociatory -sleeve valve surrounding said outer cylinder'and controlling thel exhaust ports therein; springs arranged to hold said sleeve valve in port-closing position; an annular cylinder surrounding said outer cylinder; a reciprocatory annular piston in said annular cylinder and operatively connected with said valve sleeve; ports controlling theoperation of said annular piston and controlled by said cylinder-piston; and means for supplying the combustible mixture to said outer cylinder; substantially as described. y

10. An internal combustion en ine comprising an outer stationary cylin er closed at both ends, the outer side Walls of said cylinder being provided With exhaust ports; a hollow cylinder-piston reciprocating in said outer cylinder and closed at both ends; a stationary piston operating in said cylinder-piston and co-operating therewith td supply fuel charges to said outer cylinder; a reciprocatory sleeve valve surrounding said outer cylinder and controlling the exhaust ports therein; springs arranged to hold said sleeve valve in port-closing position; an annular cylinder surrounding said outer cylinder; a reciprocatory annular piston in said annular cylinder and operatively connected With said valve sleeve; ports controlling the operation of said annular piston and controlled by said cylinder-piston; means for supplying the combustible mixture to said outer cylinder; an air cylinder co-axial With said outer cylinder; a piston in said air cylinder; and means for utilizing said air cylinder and piston for charging said outer cylinder, substantially as described.

11. The combination with an internal combustion engine cylinder having one or il 12. The combination with an internal combustion engine cylinder having one or f.

v.a spring normally holding said sleeve inV port-closing position; an annular Cylinder surrounding said engine cylinder; an annu- .lar piston in said annular cylinder and op- A ports and to exhaust said annular cylinder eratively connected with said Sleeve Valve;

`piston controlled ports arranged to admit combustion pressure to saidV annular c'ylinder to operate said sleeve valve to open said after adenite period; and Orts through which fuels may be introduce into said enginey cylinder, sulostantialhT n as described.

VIn testimony whereof l havefsigned rny 15 nanievto this ys ipeciieation in the presence of two subscribing Witnesses.

FREDERICK ri.v LEINWEBEn.`

l Witnesses f JosnUA` R. H. Poms, HELEN F. Linus(v 

